Improvement in purifying benzine



at one time, it is found lined with lead,

new state hind can GEORGE LUPTON, OF INDIANAPOLIS, INDIANA.

Letters Patent, No. 110,054. dated December 13, 1870.

a IMPROVEMENT IN PURIFVING BENZINE.

y The Schedule referred to in these Letters Patent: and making part or the luiu. i I

To all whom it may concern:

Be it known that I, GEORGE LUPTON, of Indianapolis, in the county of Marion have invented a new and improved Process for Purifying the Ordinary Benzine of Commerce,- and I do hereby declare that the following is such a full, clear,

, and exact description thereof as to enable those skilled in the art to practice the same. I

This improvement relates to the manner of purifying the ordinary benzine of commerce, which is genorally in a more or less impure state when put upon the market; and V My invention consists in a process by which the purchaser of-sueh an-impure article can purify the same, as will be more fully explained hereinafter.

Varidns methods are adopted at the mauuihctories for purifying benz'ine; one, and perhaps the most common one, is to place a large quantity in a tank to which about five per cent. of'sulphnrio acid is added, after which the mass is agitated for some time and then left to settle, when the acid is drawn oil from the bottom of the tank.

When the process has been carried to this point, a stream of water is turned into the tank, and the contents are washed, after which potash .is sometimes used, with the intention of neutralizing the sulphuric acid.

Owing to the fact that large quantities are treated that whether the above process or any other now in use he resorted to, a suflicicnt quantity of theaci'd remains to render the article capable of destroying iron vessels in which it may be stored, and also that enough of the sulphuric acid remains to render it very ofleusive while being burned.

My improved process for purifying this articleis designed to remove the above referred to objections and furnisha mezins by which the retail dealers can purify the impure article before supplying it to their customers, :ufiontradisting'uished from the processes used in the manufactories. v A

In practice use benzine as a base, m-combmatiou with hydrated sesquioxide of iron, hydrate of lime, chloride of barium, carbonate of soda, and paraffine.

and State of Indiana,

By the use of hydrated 'sesquioxide of iron and bydrate oflime, snlphuretted hydrogen, and carbonicacid gas, which are so detrimental to health and life, and which diminish the brilliancv of, the light, areeffectually removed.

Chloride of barium forms an insoluble 1 chemical compound with the sulphuric acid contained in the fluid, which compound settles to the bottom, thereby preventing the binning of the acid with the fluid, which would vitiate the atmosphere.

- Carbonate of soda neutralizes any nitric acid, which may remain in the benzine after it has been treated in the usual manner, thereby preventing the formation of nitro-benzole. I

Paraifine is added to increase the quantity of olefiant gas which contributes so much to the brilliancyof the light.

To prepare the fluid, a barrel-or other vessel of suffieient capacity may be used.

To forty (40) gallons of henzine add ten'(l-0) pounds of hydrated sesqnioxide of .iron, and ten (10) pounds of hydrate of lime. This mixture should be thoroughly agitated and allowed to stand twenty-four hours.

The fluid should then be drawn otf and eight (8) ounces of chloride of barium added to it, and the mixture again agitated and allowed tosettle. After that one (1) pound of corbonate of soda is thrown in and well mixed with the fluid. Ten (10) pounds of refined parafiine is next dissolved in the fluid, which should stand four or five days before being used.

What I claim as my invention. and desire to secure by Letters Patent, is"' The within-described process for purifyinghenzine for illuminating purposes, substantially as and for the purpose set fortlr.

' In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

- GEORGE LUPTON.

Witnessesr.

D. I. Honnowar, '3. Bow. J. Ems. 

